Medical Visa Korea Duration: How Long Can You Stay for Treatment?

Foreign patients traveling to Seoul for medical treatment can typically stay 90 days visa-free, but those requiring longer stays can apply for a C-3-1 medical visa, which permits stays of up to two years with potential extensions. The visa category and your eligibility depend on your treatment length, citizenship, and hospital sponsorship.

Most international patients arriving in Seoul for procedures at major hospitals like Asan Medical Center or Samsung Seoul Hospital qualify for visa-free entry (KOTC eligibility) for the initial 90-day window. If your treatment extends beyond that period, you'll need to transition to the C-3-1 category before your initial stay expires.

How long can foreigners stay in Korea for medical treatment?

Foreign patients can stay 90 days visa-free or up to 2 years with a C-3-1 medical visa.

The basic rule is straightforward: if you arrive as a tourist (or under other visa categories), South Korea grants you a 90-day visa-free stay, provided your nationality qualifies you for KOTC exemption status—which includes most Western countries, Japan, Australia, and many others. During this window, you can undergo consultations, diagnostic tests, and procedures without formal visa sponsorship. However, if your medical plan requires hospitalization, recovery, or follow-up appointments that exceed 90 days, you need a dedicated medical visa before the initial period expires.

The C-3-1 visa is South Korea's official medical-treatment category. It is issued for stays of up to one year initially, with the possibility of extension for an additional year (sometimes longer, depending on the hospital's medical recommendation and the immigration authority's assessment). The key difference from a tourist stay is that a C-3-1 requires formal sponsorship from a registered hospital and documented medical necessity.

What documents do you need for a C-3-1 medical visa application?

A C-3-1 medical visa requires a hospital sponsorship letter, your passport, medical diagnosis, and proof of financial means.

To apply for a C-3-1, you will need to gather several documents before visiting a Korean embassy or consulate in your home country. Your hospital (typically the department handling your case) provides a formal sponsorship letter stating your diagnosis, proposed treatment plan, expected duration of stay, and estimated costs. Bring your valid passport, a completed visa application form, passport-sized photographs (usually 4×6 cm), and evidence of financial stability—bank statements or sponsor affidavits demonstrating you can cover medical costs and living expenses.

Some consulates also request a medical report from your home country's physician, outlining why treatment in Korea is medically necessary. Processing time typically ranges from one to two weeks, though this varies by location. It's advisable to begin the application process as soon as your Korean hospital confirms your treatment plan and agrees to sponsor your visa.

Can you extend a C-3-1 medical visa after arrival?

Yes, C-3-1 visas can be extended within Korea, typically adding one additional year to your stay.

If you arrive on a one-year C-3-1 and your treatment continues beyond that period, you can apply for an extension through the Korea Immigration Service (KIS) office in Seoul. The extension process requires an updated medical letter from your hospital stating that continued treatment is medically necessary, proof of ongoing hospital visits or scheduled procedures, and evidence that you remain financially capable of supporting yourself. Extensions are not automatic—the immigration authority reviews each request individually. Most extensions add one full year, bringing your total stay to two years. After two years, further extensions become less routine, and the hospital's medical justification becomes critical. Some patients with chronic conditions undergoing long-term management (such as cancer treatment or complex rehabilitation) have extended beyond two years, but this requires compelling medical documentation and cannot be assumed.

Getting there from ASTY Cabin

ASTY Cabin in Songpa-gu places you within 15–25 minutes of Seoul's major medical hospitals. Asan Medical Center (Korea's largest tertiary hospital) is reachable by taxi in 15 minutes or by subway via Line 3 in roughly 20 minutes. Samsung Seoul Hospital, located in Gangnam, is about 20 minutes away. Both hospitals have English-speaking international patient coordinators and established partnerships with overseas referral networks. From the cabin, a 5-minute walk brings you to Garak Market Station (Lines 3 & 8), offering direct access across the city. If you're undergoing extended treatment and need a home base between hospital visits, ASTY Cabin provides full kitchen facilities, laundry, and hotel-grade comfort at weekly rates starting from ₩700,000—substantially cheaper than extended hotel stays while maintaining the convenience of central Songpa-gu proximity to major medical institutions.

Understanding visa-free eligibility for medical tourists

Your initial 90-day window doesn't require prior visa sponsorship if your passport qualifies for visa-free entry into South Korea.

Visa-free eligibility depends on your citizenship. Citizens of approximately 191 countries and regions can enter South Korea without a visa and receive an automatic 90-day stay permit upon arrival—no prior approval needed. This is the KOTC (Korea Tourism Organization) exemption list, and it includes most of Europe, North America, Australia, New Zealand, Japan, and many others. When you land at Incheon or Gimpo, immigration stamps your passport with the 90-day permission, and you can immediately book hospital appointments. A serviced residence like ASTY Cabin is often preferable to a hotel during this phase because your stay duration is uncertain and rental rates are lower for weekly or monthly bookings than nightly hotel charges. However, this 90-day grace period is a tourist default, not a medical visa. The hospital will not count on it for scheduling; you should plan your initial consultations and diagnostic work within the first two weeks of arrival, then apply for the C-3-1 well before day 90.

When to apply for the C-3-1 before your 90 days expire

Begin your C-3-1 application during weeks 4–6 of your initial stay to ensure approval before day 90.

Timing is critical. If you wait until day 80 to apply for a C-3-1, you risk either overstaying or having to leave Korea mid-treatment while your visa is being processed abroad. Best practice: within your first month in Korea, once your hospital has finalized your treatment plan and agreed to sponsor you, request the hospital's sponsorship letter. Use weeks 4–6 to gather remaining documents and submit to your nearest Korean embassy or consulate (you can do this from Korea by mailing documents to your home country's embassy, or by traveling to a consulate in a nearby country, though this is often less convenient). Processing typically takes one to two weeks. If you're applying from within Korea, contact the Korea Immigration Service Seoul Metropolitan Office (located in Jung-gu) to confirm their internal extension procedures, as the rules for applying within Korea differ slightly from embassy applications.

Can you stay longer than 2 years on a medical visa?

Extensions beyond two years are possible but become increasingly discretionary and require strong medical justification.

The official C-3-1 framework permits an initial one-year stay and one renewal, totaling two years. In practice, patients with ongoing treatment needs—such as those undergoing multiple surgeries, complex cancer protocols, or long-term rehabilitation—have successfully extended beyond two years. However, each extension past year two is reviewed case-by-case by the Korea Immigration Service, and the hospital's medical certification becomes the primary deciding factor. Unlike the first two years, which have clearer procedures, extensions beyond that point require direct negotiation with immigration officials and the hospital's international patient department. If your medical condition requires stays longer than two years, discuss this explicitly with your hospital's patient coordinator early in your treatment so the hospital can plan its documentation accordingly. Do not assume extension is automatic after year one; begin conversations about longer-term stays during your first consultation.

Visa status and working while in Korea

You cannot legally work in Korea on a C-3-1 medical visa, even for short-term or remote roles.

The C-3-1 is explicitly a medical-treatment category visa. It does not grant work authorization. If you're a digital nomad or freelancer considering a medical-tourism trip with some work on the side, a C-3-1 is not the appropriate visa. Working on a medical visa, even part-time or remotely, technically violates immigration law, and violations can result in visa revocation, deportation, and future entry bans. If you need to combine work and medical treatment, consult the Korea Immigration Service about alternative visa categories—such as a D-10 (job seeker) or a negotiated variant—well before arrival. Otherwise, structure your stay purely around treatment and recovery.

Frequently Asked Questions

Q: Do I need a visa to enter Korea for a short medical procedure? A: No. If your citizenship qualifies for visa-free entry (most Western, Asian, and developed countries do), you receive an automatic 90-day permit upon arrival. Short procedures completed within those 90 days require no prior visa sponsorship.

Q: How long does it take to get approved for a C-3-1 medical visa? A: Typically one to two weeks from submission at a Korean embassy or consulate, though processing times vary by location. Begin your application in weeks 4–6 of your initial 90-day stay to ensure approval before expiration.

Q: Can I extend my C-3-1 medical visa from within Korea? A: Yes. Contact the Korea Immigration Service in Seoul (Jung-gu office) and submit an updated medical letter from your hospital, proof of ongoing treatment, and financial documentation. Extensions typically add one full year.

Q: What happens if my visa expires during treatment? A: Overstaying is a serious violation that can result in fines, deportation, and future entry bans. Always apply for extensions before your current visa expires, not after. If you miscalculate, visit the Korea Immigration Service immediately to request an emergency extension or discuss your options.

Q: Can I bring family members on a medical visa? A: The C-3-1 is issued only to the patient undergoing treatment. Family members accompanying you would need to apply for separate visas—either visa-free entry (if eligible) or a D-10 or other appropriate category. Some hospitals provide family-accommodation letters, but these do not automatically grant visas to relatives.

Last updated: January 2026 — Source: ASTY Cabin Editorial team, Songpa-gu Seoul.

Plan your long-stay medical treatment in Seoul

If you're preparing for extended medical treatment in Seoul, a serviced residence offers comfort and cost efficiency that hotels cannot match for stays longer than two weeks. partners in Songpa-gu provide consultation support and can connect you with international-patient departments at Asan Medical Center and Samsung Seoul Hospital. Begin your visa planning early, and coordinate with your hospital's visa-sponsorship team to ensure seamless documentation.